Hose coupling



l Patented Aug. 27, 1929.

lUNITED STATES 4 HOHER C. PIPHEB, OF OAKLAND, CALIFORNIA.

H083 COUPLIN'G.

Application mea February is, 192s. serial No. 254,404.

This inv'ention relates to hose couplings and has for its principal object the provision of a simple and inexpensive device of the character referred to which maybe easi- 5 ly, firmly and tightly connected with the end of a hose..

In carrying out the invention into practice, I provide a tubular shank having a coupling member arranged at one end thereof and an outwardly tapered member at the other end. This latter member is adapted to be inserted into the end of a hose. Cooperating with this outwardly tapered member l is a clamp collar formed with a bore larger than but similar tothe outwardly tapered member so that it may be forced thereover to clamp the hose thereto. As this clamp collar is moved outwardly on the outwardly tapered member, the distance between its bore and the surface of said tapered member will decrease so as to compress the hose therebetween. Therefore, any tendency to disengage the hose from the shank without first removing the clam collar will tend to more tightly clamp the ose to the shank.

One form which the invention may assume is exemplified in the following description and illustrated by way of example in the accompanying drawings, in which:

Fig. 1 is a perspective view of a device embodying the preferred form of my invention as connected with the end of a hose and with parts thereof in central longitudinal section to more fully disclose its construction.

Fig. 2 is a view in central longitudinal section through the device disclosing the shankin full and the manner in which the parts are arranged when the device is to be connected tov a hose.

Referring more particularly to the accompanying drawings, 10 indicates a hose couling comprising a female coupling memcr 11 interiorly threaded to receive a male coupling member 12.` The coupling member 45 11 consists of a hollow. interiorly threaded cylindrical collar 14 havin an inturned Bange 15 at one end thereo 14 is arranged loosely on a tubular connector 16. This latter is formed with a radially 50 circumscribing flange 17 against which the ange 15`of the collar is adapted to abut.

When the collar let is threaded on the malecoupling member 12, it revolves about the connector 16 and its flangel engages with the flange 17 on the connector 16 and draws the end of the latter tightly into engagel -pling members when they are connected to- This collar l meut with the contiguous end of the coupling member 12. If desired a gasket may be interposed between the ends of the cougether., l

The connector 1G is tapped and is threaded on the threaded end of a tubular shank 18. The other end of the shank is formed with a portion 19 which flares or tapers outwardly for a major portion ot' its length. The outermost extremity of this port-ion or member 194 of the shank is rounded, so that it may be inserted in the end of a hose. The larger diameter of the outwardly tapered portion or member 19V of the shank 18 is slightly larger than the interior diameter of the hose, so that the latter will fit tightly thereover.

Loosely arranged over the shank 18 is acylindrical clamp collar 2() having a tapered bore similar to the tapered portion' 19 of the shank. The bore of the clamp collar, however, is somewhat larger than the portion 19 so that it will fit over the end of the hose arranged on the portion 19. The diameter of the bore of the clamp collar 2() is such that after it is tightly arranged on the end of the hose and over the portion 19 of the shank, an attempt to disen age the hose and shank by exertinga pul on 'the hose will result in a greater clamping action. This is because the space between the bore of the clamp collar 20 and the surface of the portion 19 of the shank decreases as the collar moves outwardly relative to theportion 19. Therefore,l any attempt to disengage the hose from the coupling by exerting a pull on the hose will tend to move the collar 20 outwardly on the shank 95 and result in an increased clamping aeion.

To initially osition the collar 20 to clamp thc hose von tie portion 19 of the shank,v I provide a nut21 threaded on the shank 100 intermediate the' clamp collar 20 and the coupling member 11. This nut 2l may be threaded along the threaded portion o1 the shank after the hose is arranged on the portion 19 ofthe shank to force the clamp collar tightly over the hose and clamp it to the shank. It will be noticed that the nut 21 is counterbored at oneend to enable it to telescope over the adjacent end of the coupling member 16. This is necessary when it is desired to connect or disconnect the coupling from the hose without the necessity of removing the coupling. It also rovides protection for the exposed threa s when the parts are in clanplng position.

It is seen from the drawings that the coupling 11 may be removed from the shank as theconnector 16 is threaded thereon. This will permit the shank and hose to be conf. nected directly to a pipe if desired.

In operation of the device, the parts thereof are constructed as illustrated and described, and-arranged as shown in Fig. 2. 'lhe portion 19 of the shank is then inserted in the end of the hose and the clamp collar 20 is forced over the hose by lneans of the nut 21 until a clamping action is obtained clamping the hose firmly to the portion 19 oi the shank. The device is then ready for use.

If it is desired to connect the hose to a pipe line, it is only necessary to remove the coupling member 11 therefrom and the shank may then be directly connected to a pipe line.

From the foregoing it is obvious that 1 have provided a very simple and inexpensive device which will irml and tightly connect Aa coupling with the en of a hose.

While I have shown-the preferred form of my invention, it is to be understood that various changes may be made in its construction by those skilled in the art without departing from the spirit of the invention, as defined in the a pended claim.

Having thus escribed In invention what I claim and desire to secure by Letters atent 1s: f

A device of the character described' comprising a tubular shank, one end of said shank being threaded, a coupling threaded on to said threaded end of the shank, the otherend of the shank being outwardly tapered to a diameter slightly larger than the 1nterior diameter of the hose, a", cylindrical clamp collar arranged over the shank formed with a bore larger in diameter than the .diameter of the tapered end of the shank,

said bore being tapered similar to the taper of said tapered end ofthe shank whereby said clamp collar may be arranged over the end of the hose mounted on said tapered end of the shank whereby outward 'movement of the collar relative to said tapered end of theshank will result in a clamping action therebetween, and a nut threaded on the shank intermediate the coupling and the tapered end to force said clam collar outwardly relative to the tapere end of the shank, said nut being counterbored at one end to enable it to be telescoped over the adjacent end of the. cou ling member.

' HOMERO. PIPHER. 

